Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Straight-phase HPLC on Lichrosorb Diol of a so-called steroid sulfate fraction from rat brain using the unreliable C18 SPE procedure. Each HPLC fraction was hydrolyzed and derivatized with HFBA at 20°C. The release of PREG (r-PREG) and DHEA (r-DHEA) (A) coincides with the elution of CHOL (B). The elution of 3H-PREGS in the same system is shown for comparison.
